header{
    background-color: rgb(242, 242, 242);
    position: fixed;
    z-index: 99;
    top: 0;
    left: 0;
    right: 0;
}
.wrapper{
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 50px;
    background: #f2f2f2;
    color: #666;
    transition: transform .2s ease-out;
    transform: translateY(-100%);
}
.header-left{
    display: block;
    width: 6rem;
    line-height: 6rem;
    margin: 0 2rem;
}
.icon-back{
    width: 5rem;
    height: 5rem;
    background-image: url('img/向左.png');
    background-size: cover;
}
.header-middle{
    flex: 1;
    font-size: 3rem;
    text-align: center;
}
.header-right{
    display: block;
    width: 6rem;
    margin: 0 2rem;
}
.icon-search{
    width: 6rem;
    height: 6rem;
    background-image: url('img/搜索.png');
    background-size: cover;
}
main{
    padding-top: 50px;
    padding-bottom: 10rem;
}
/* 左边 */
.leftbox{
    position: fixed;
    top: 50px;
    bottom: 10rem;
    left: 0;
    width: 15.2rem;
    border-right: 1px solid #efefef;
    overflow: hidden;
    z-index: 89;
}
.nav-list{
    z-index: 88;
    position: absolute;
    top: 0;
    bottom: 0;
    left: 0;
    right: -3rem;
    padding: 2rem 3rem 2rem 0;
    background: #fefefe;
    overflow-y: auto;
}
.nav-list li{
    font-size: 3.4rem;
    height: 9rem;
    line-height: 9rem;
    text-align: center;
    -webkit-tap-highlight-color: rgba(0,0,0,0);
    transition: transform .1s linear;
    transform-origin: center center;
    transform: scale(.76);
}
.nav-list .active{
    color: #fb7d34;
    transform: scale(1);
}
.nav-list li a{
    display: block;
    height: 9rem;
    overflow: hidden;
}
/* 内容 */
.content{
    padding-left: 18.4rem;
    padding-right: 3.2rem;
    position: relative;
    width: 50.4rem;
    margin: auto;
    overflow-y: auto;
    z-index: 66;
}
.good-item{
    width: 50.4rem;
}
.good-item:last-child{
    min-height: calc(100vh - 8rem);
}
.cell{
    height: auto;
}
.cell img{
    display: block;
    height: 20rem;
    width: 50rem;
}
.come img{
    height: 8rem;
}
.category-title{
    font-size: 2.8rem;
    text-align: center;
    margin-top: 2rem;
    height: 12.8rem;
    line-height: 12.8rem;
}
.category-title span{
    position: relative;
}
.category-title span::before{
    content: '';
    position: absolute;
    top: 50%;
    left: 0;
    transform: translateX(-150%);
    border-top: 1px solid #e0e0e0;
    width: 4rem;
}
.category-title span::after{
    content: '';
    position: absolute;
    top: 50%;
    right: 0;
    transform: translateX(150%);
    border-top: 1px solid #e0e0e0;
    width: 4rem;
}
.category-content{
    width: 100%;
    margin: -0.6rem 0 0;
}
.Box{
    float: left;
    width: 33.333333333333336%;
    text-align: center;
    margin-top: 2rem;
    margin-bottom: 3rem;
    overflow: hidden;
}
.Box-img{
    width: 10rem;
    height: 10rem;
    margin: 0 auto;
    background: #fff;
    overflow: hidden;
}
.Box-img img{
    display: block;
    height: 100%;
}
.Box-name{
    margin-top: 2.8rem;
    white-space: nowrap;
    font-size: 2.3rem;
    color: rgba(0,0,0,.54);
}